Wave simulation system for visual wave detection

Abstract

The utility model relates to the technical field of ocean engineering, and discloses a wave simulation system for visual wave detection, which comprises a simulation platform device, an upper platform, a lower platform and a six-degree-of-freedom driving mechanism arranged between the upper platform and the lower platform, the six-degree-of-freedom driving mechanism is used for enabling the upper platform to perform spatial six-degree-of-freedom motion relative to the lower platform; the bracket is arranged on the outer side of the simulation platform device; the image acquisition device is arranged on the bracket and is used for acquiring the motion state of the upper platform; and the illumination device is arranged on the support and comprises an illumination lamp, and the illumination intensity and the illumination direction of the illumination lamp are adjustable. According to the wave simulation system, by arranging the six-degree-of-freedom simulation platform, complex multi-direction wave motion can be accurately simulated, and meanwhile the device cost is low; by arranging the illumination device to intelligently simulate a natural illumination environment, a high-precision, multifunctional and intelligent simulation experiment platform is provided for visual wave detection, and the credibility of an experiment result is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ocean engineering, in particular to a wave simulation system for visual wave detection. Background Art

[0002] With the continuous advancement of marine scientific research and marine development activities, the importance of accurately measuring and monitoring ocean waves has become increasingly prominent. In recent years, thanks to the rapid development of computer science and high-resolution digital camera systems, binocular vision technology has gradually demonstrated its great potential in measuring ocean wave parameters. It is gradually replacing traditional manual and electronic sensing devices and playing an increasingly important role in scientific research and engineering.

[0003] To fully evaluate the accuracy of binocular visual wave measurement technology, obtaining accurate wave parameters is crucial. Currently, the main technical methods for obtaining visual wave parameters include field measurements and water tank wave-generating devices. Field measurements directly obtain wave data in real ocean environments through technologies such as buoys, radar, and satellite remote sensing. They offer the advantages of accurate and reliable data and the ability to monitor over a long period of time and over a large area. However, this method also faces challenges such as high cost, complex operation, and significant susceptibility to adverse weather or marine environments. Obtaining high-quality data of certain types is particularly difficult.

[0004] On the other hand, the water tank wave-making device uses specially designed water tanks and wave generators to simulate natural ocean conditions in a laboratory environment. It can accurately control wave parameters and achieve repeatable settings, making the experimental results highly repeatable. However, this method also has limitations such as high cost, high operational expertise, and the ability to only simulate one-way waves. In addition, the waves generated by the wave maker will inevitably experience attenuation during propagation, affecting the parameters of the generated waves. In addition, the water tank wave-making device faces a problem that cannot be ignored during experiments, namely the inability to reproduce the lighting conditions in the real ocean environment, which may have a certain impact on the accuracy of visual measurement technology. Utility Model Content

[0005] Based on the problems in the existing technology that wave tanks cannot simulate three-dimensional waves with high precision and large scale, and the lighting factors in detection affect the measurement results, the utility model provides a wave simulation system. By setting up a six-degree-of-freedom simulation platform, it can accurately simulate complex multi-directional wave motions, and at the same time, the device cost is low. By setting up a lighting device to intelligently simulate the natural lighting environment, a high-precision, multi-functional, intelligent simulation experimental platform is provided for visual wave detection, thereby improving the credibility of the experimental results.

[0006] The utility model provides a wave simulation system for visual wave detection, comprising:

[0007] A simulation platform device, comprising an upper platform, a lower platform, and a six-degree-of-freedom drive mechanism disposed between the upper platform and the lower platform, the six-degree-of-freedom drive mechanism being configured to cause the upper platform to perform six-degree-of-freedom spatial motion relative to the lower platform;

[0008] A bracket, arranged on the outside of the simulation platform device;

[0009] an image acquisition device, disposed on the bracket, for acquiring the motion state of the upper platform;

[0010] An illumination device is provided on the bracket, and the illumination device comprises an illumination lamp, the illumination intensity and illumination direction of the illumination lamp are adjustable.

[0011] In some embodiments, at least one light sensor is provided on the upper platform, and the light sensor is used to detect light intensity.

[0012] In some embodiments, the lighting device further includes a lamp base, a first lifting mechanism disposed on the lamp base, and a first rotating mechanism disposed on the top of the first lifting mechanism; the lighting lamp is connected to the rotating mechanism.

[0013] In some embodiments, the first lifting mechanism is a linear actuator.

[0014] In some embodiments, the lighting device is slidably disposed on the bracket.

[0015] In some embodiments, the bracket is provided with an annular slide rail, the slide rail is arranged along the outer circumference of the upper platform, a slider is slidably provided on the slide rail, and the lighting device is fixed on the slider.

[0016] In some embodiments, a sliding drive mechanism is provided in the slider for driving the slider to slide along the slide rail.

[0017] In some embodiments, the sliding drive mechanism includes a drive motor, a gear connected to the output shaft of the drive motor, and a rack meshed with the gear; the rack is arranged on the slide rail along the length direction of the slide rail, and the drive motor is arranged in the slider and meshed with the rack through the gear.

[0018] In some embodiments, the slider includes a slider body and a slider side plate, and the slider body and the slider side plate are detachably connected via a knob component.

[0019] In some embodiments, the image acquisition device includes a base, a second lifting mechanism disposed on the base, a second rotating mechanism disposed on the top of the second lifting mechanism, and two cameras disposed on the second rotating mechanism.

[0020] Compared with the prior art, the advantages and positive effects of the present invention are:

[0021] The wave simulation system utilizes a six-degree-of-freedom drive mechanism, enabling the upper platform to flexibly move in multiple degrees of freedom, simulating the rise and fall and fluctuation patterns of different waves, ensuring high-precision reproduction of multidimensional wave phenomena during experiments. The illumination device simulates diverse lighting conditions, eliminating interference from light during experiments, thereby improving the accuracy and reliability of experimental results. Furthermore, the system boasts a rational design, low cost, and ease of operation and maintenance, providing a reliable and efficient experimental platform for visual wave detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 This is a schematic structural diagram of the wave simulation system of the utility model;

[0024] Figure 2 This is a schematic structural diagram of the image acquisition device in the wave simulation system of the present invention in the front view direction;

[0025] Figure 3 This is a schematic diagram of the structure of the image acquisition device in the wave simulation system of the present invention in the side view direction;

[0026] Figure 4 This is a schematic structural diagram of the illumination device in the wave simulation system of the present invention in the direction of view;

[0027] Figure 5 This is a schematic structural diagram of the illumination device in the wave simulation system of the present invention when viewed from the side;

[0028] Figure 6 This is a schematic diagram of the structure of the slider and the guide rail in the wave simulation system of the present invention from a top view, and is a partial cross-section to show the interior of the slider;

[0029] Figure 7 This is a schematic structural diagram of the side view of the cooperation between the slider and the guide rail in the wave simulation system of the present invention;

[0030] Description of reference numerals:

[0031] 100-bracket; 110-slide rail;

[0032] 200 - simulation platform device; 210 - upper platform; 220 - lower platform; 230 - six-degree-of-freedom drive mechanism;

[0033] 300 - image acquisition device; 310 - base; 320 - second lifting mechanism; 330 - second rotating mechanism; 340 - camera;

[0034] 400 - lighting device; 410 - lighting lamp; 420 - lamp base; 430 - first lifting mechanism; 440 - first rotating mechanism;

[0035] 500-light sensor;

[0036] Slider 600; 610 - slider body; 620 - slider side plate; 630 - knob component; 641 - drive motor; 642 - gear; 643 - rack. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections. A person of ordinary skill in the art can understand the specific meanings of the above terms in the present invention based on the specific circumstances. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any appropriate manner in any one or more embodiments or examples.

[0040] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, unless otherwise specified, "plurality" means two or more.

[0041] Reference Figure 1-Figure 7 , which is an embodiment of the wave simulation system for visual wave detection of the utility model. The system can simulate three-dimensional waves with high precision and large range, and effectively eliminate the influence of lighting factors on the detection results, thereby providing a high-precision, multi-functional and intelligent simulation experiment platform.

[0042] like Figure 1 As shown, the wave simulation system includes a simulation platform device 200 , a bracket 100 , an image acquisition device 300 and a lighting device 400 .

[0043] The simulation platform device 200 includes an upper platform 210 , a lower platform 220 , and a six-degree-of-freedom driving mechanism 230 disposed between the upper platform 210 and the lower platform 220 .

[0044] The upper platform 210 is used to carry a model or experimental device for simulating waves.

[0045] The lower platform 220 serves as a supporting structure and is stably fixed on the ground.

[0046] The six-degree-of-freedom drive mechanism 230, located between the upper platform 210 and the lower platform 220, precisely controls the upper platform 210 to achieve six degrees of freedom (DOF) in space: translation along the X, Y, and Z axes and rotation around them, thereby accurately simulating complex, multi-directional wave motion. Specifically, the six-degree-of-freedom drive mechanism 230 includes six mechanical links, each connected to the upper and lower platforms 220 via a hinge. Motors control the extension and retraction of the links, enabling translation of the upper platform 210 in the X, Y, and Z directions and rotation around them, completing the six-degree-of-freedom motion of the upper platform 210.

[0047] The bracket 100 is disposed on the outside of the simulation platform device 200 and is used to support the image acquisition device 300 and the lighting device 400 .

[0048] The image acquisition device 300 is installed on the bracket 100 and is used to acquire the motion state of the upper platform 210 in real time.

[0049] The lighting device 400 is also disposed on the bracket 100 and includes a lighting lamp 410 . The lighting intensity and lighting direction of the lighting lamp 410 can be adjusted.

[0050] The simulation platform device 200, the image acquisition device 300 and the illumination device 400 are respectively connected to the control system of the wave simulation system, receive control signals and perform corresponding actions.

[0051] The wave simulation system for visual wave detection utilizes a six-degree-of-freedom drive mechanism 230, enabling the upper platform 210 to flexibly move in multiple degrees of freedom, simulating the rise and fall and fluctuation patterns of different waves, ensuring high-precision reproduction of multidimensional wave phenomena during experiments. The illumination device 400 simulates various lighting conditions, eliminating interference from illumination during experiments, thereby improving the accuracy and reliability of experimental results. Furthermore, the system boasts a rational design, low cost, and ease of operation and maintenance, providing a reliable and efficient experimental platform for visual wave detection.

[0052] In this embodiment, at least one light sensor 500 is also installed on the upper platform 210. This sensor is used to detect the light intensity of the illuminating lamp 410. The light sensor 500 provides real-time feedback on light intensity, ensuring that the illumination device 400 automatically adjusts the light intensity according to experimental requirements, providing ideal lighting conditions for the experiment. By monitoring and adjusting light intensity in real time, the system can more accurately simulate different natural lighting environments, thereby enhancing the accuracy of visual wave detection and the reliability of experimental results.

[0053] See also Figure 4 and Figure 5 Specifically, the lighting device 400 further includes a lamp base 420, a first lifting mechanism 430, and a first rotating mechanism 440. The first lifting mechanism 430 is mounted on the lamp base 420, the first rotating mechanism 440 is disposed on the top of the lifting mechanism, and the lighting lamp 410 is connected to the lamp base 420 via the first rotating mechanism 440.

[0054] In this embodiment, the first lifting mechanism 430 is a linear actuator that can adjust the height of the lighting lamp 410. The first rotating mechanism 440 is an intelligent pan-tilt platform that can change the angle of the lighting lamp 410 to achieve multi-angle lighting simulation.

[0055] This design allows for flexible vertical and horizontal adjustment of the lighting fixture 410, enhancing the adaptability of the lighting fixture 400. By adjusting the light's height through a linear actuator and the lighting angle through a rotation mechanism, different lighting conditions can be better simulated, providing a diverse lighting environment for wave simulation experiments and effectively improving experimental accuracy.

[0056] Furthermore, the lighting device 400 is slidably mounted on the bracket 100. Specifically, the bracket 100 is provided with an annular slide rail 110, which is arranged along the outer circumference of the upper platform 210. The lighting device 400 is fixed to the slide rail 110 via a slider 600, which is able to slide freely along the slide rail 110. This design allows the lighting device 400 to adjust the illumination 360° around the upper platform 210, adjusting the orientation of the light source to better simulate the effect of natural light changes.

[0057] In this embodiment, if Figure 6 and Figure 7 As shown, the slider 600 on the slide rail 110 is further provided with a sliding drive mechanism for driving the slider 600 to slide along the slide rail 110. Specifically, the sliding drive mechanism includes a drive motor 641, a gear 642, and a rack 643. The gear 642 is connected to the output shaft of the drive motor 641, and the rack 643 is fixedly arranged along the length of the slide rail 110. The drive motor 641 drives the slider 600 to slide smoothly along the slide rail 110 through the engagement of the gear 642 and the rack 643. The sliding drive mechanism can automatically adjust the position of the lighting device 400, improving the intelligence and precision of the lighting adjustment.

[0058] Furthermore, the slider 600 is composed of a slider body 610 and a slider side plate 620, which are detachably connected by a knob component 630. This design facilitates the installation and maintenance of the slider 600. The user can separate or combine the sliders 600 through simple operations, which facilitates the installation and adjustment of the system.

[0059] See also Figure 2 and Figure 3 The image acquisition device 300 adopts a binocular vision acquisition device, including a base 310, a second lifting mechanism 320, a second rotating mechanism 330 and two cameras 340.

[0060] The base 310 can be fixed to the bracket 100 or the slide rail 110 by fasteners such as bolts, or can be slidably installed on the slide rail 110 by a sliding block.

[0061] The second lifting mechanism 320 is disposed on the base 310 and is used to adjust the height of the camera 340. By adjusting the height of the camera 340, image information from different perspectives can be acquired. The second lifting mechanism 320 can be adjusted manually or electrically, such as by a manual telescopic rod, an electric push rod, or a screw-nut mechanism.

[0062] The second rotating mechanism 330 is disposed on the top of the second lifting mechanism 320 and is used to adjust the horizontal rotation and pitch angles of the camera 340 so as to observe the simulated waves from different directions.

[0063] Two cameras 340 are mounted on the second rotating mechanism 330 to form a binocular vision system for capturing the motion of the upper platform 210. The appropriate type of camera 340 (e.g., an industrial camera, a high-definition webcam, etc.) should be selected based on actual needs to ensure that the required resolution and frame rate are met.

[0064] The experimental process of the wave simulation system for visual wave detection is as follows:

[0065] 1. Install the image acquisition device 300 to a suitable location according to experimental requirements.

[0066] 2. Select the time period to be simulated (e.g., morning, noon, or evening). The control system automatically adjusts the position of the illumination device 400 according to the set time period to determine the orientation of the light source. Then, based on the set time period, the height and angle of the illuminator 410 are automatically adjusted to adjust the illumination direction (e.g., simulating low-angle illumination in the morning or vertical illumination at noon). Simultaneously, based on real-time feedback from the illumination sensor 500, the brightness and color temperature of the illuminator 410 are automatically adjusted to ensure a realistic lighting environment that meets the experimental requirements.

[0067] 3. Control of the simulation platform device 200

[0068] Simulating wave height: Return the upper platform 210 to its neutral position, which serves as the average wave plane at that moment. Control the upper platform 210 to move in the positive or negative direction along the Z axis to control the size of the movement and simulate the height of the wave.

[0069] Simulating the wave cycle: Return the upper platform 210 to its neutral position, which serves as the average wave plane at that time. Control the upper platform 210 to perform a fixed periodic reciprocating motion around the X, Y, and Z axes to simulate the wave cycle.

[0070] Simulating wave speed and direction: Return the upper platform 210 to its neutral position, which serves as the average wave plane. Control the upper platform 210 to move in the positive or negative direction along the X and Y axes. Controlling the direction of movement simulates the direction of the wave, and controlling the speed of movement simulates the speed of the wave.

[0071] Comprehensive wave motion simulation: The upper platform 210 is restored to its neutral position, serving as the average wave plane at that time. Simultaneously, the platform is controlled to move and rotate along the X, Y, and Z axes, simulating complex ocean environments by controlling the size of these parameters.

[0072] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the above embodiments, or to replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. A wave simulation system for visual wave detection, characterized in that: include: A simulation platform device, comprising an upper platform, a lower platform, and a six-degree-of-freedom drive mechanism disposed between the upper platform and the lower platform, the six-degree-of-freedom drive mechanism being configured to cause the upper platform to perform six-degree-of-freedom spatial motion relative to the lower platform; A bracket, arranged on the outside of the simulation platform device; an image acquisition device, disposed on the bracket, for acquiring the motion state of the upper platform; An illumination device is provided on the bracket, and the illumination device comprises an illumination lamp, the illumination intensity and illumination direction of the illumination lamp are adjustable.

2. The wave simulation system according to claim 1, characterized in that: At least one light sensor is provided on the upper platform, and the light sensor is used to detect light intensity.

3. The wave simulation system according to claim 2, characterized in that: The lighting device further comprises a lamp base, a first lifting mechanism arranged on the lamp base, and a first rotating mechanism arranged on the top of the first lifting mechanism; the lighting lamp is connected to the rotating mechanism.

4. The wave simulation system according to claim 3, characterized in that: The first lifting mechanism is a linear actuator.

5. The wave simulation system according to claim 3, characterized in that: The lighting device is slidably arranged on the bracket.

6. The wave simulation system according to claim 5, characterized in that: The bracket is provided with an annular slide rail, which is arranged along the outer circumference of the upper platform. A slider is slidably arranged on the slide rail, and the lighting device is fixed on the slider.

7. The wave simulation system according to claim 6, characterized in that: A sliding drive mechanism is provided in the slider for driving the slider to slide along the slide rail.

8. The wave simulation system according to claim 7, characterized in that: The sliding drive mechanism includes a driving motor, a gear connected to the output shaft of the driving motor, and a rack meshed with the gear; the rack is arranged on the sliding rail along the length direction of the sliding rail, and the driving motor is arranged in the sliding block and meshed with the rack through the gear.

9. The wave simulation system according to claim 8, characterized in that: The slider comprises a slider body and a slider side plate, and the slider body and the slider side plate are detachably connected via a knob component.

10. The wave simulation system according to claim 1, characterized in that: The image acquisition device includes a base, a second lifting mechanism arranged on the base, a second rotating mechanism arranged on the top of the second lifting mechanism, and two cameras arranged on the second rotating mechanism.

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